I have experimented with many small form factor servers over the years. A Pi3 or 4 should work fine, but you as others have said you are limited by no SATA, source your own power brick, and source your own case.
My most bomb proof SFF servers are a fit-pc3, still running since 2014, and a lattepanda alpha, which has been running for about 2 years. Of the two, I’d choose a fit-pc3 or whatever the most up to date model from compulab currently is.
My most bomb proof SFF servers are a fit-pc3, still running since 2014, and a lattepanda alpha, which has been running for about 2 years. Of the two, I’d choose a fit-pc3 or whatever the most up to date model from compulab currently is.